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LEARN ABOUT FREEBSD
pam_get_user
PAM_GET_USER(3) BSD Library Functions Manual PAM_GET_USER(3)
NAME
pam_get_user -- retrieve user name
LIBRARY
Pluggable Authentication Module Library (libpam, -lpam)
SYNOPSIS
#include <sys/types.h>
#include <security/pam_appl.h>
int
pam_get_user(pam_handle_t *pamh, const char **user, const char *prompt);
DESCRIPTION
The pam_get_user() function returns the name of the target user, as specified to pam_start(3). If no user was specified, nor set using
pam_set_item(3), pam_get_user() will prompt for a user name. Either way, a pointer to the user name is stored in the location pointed to by
the user argument, and the corresponding PAM item is updated.
The prompt argument specifies a prompt to use if no user name is cached. If it is NULL, the PAM_USER_PROMPT item will be used. If that item
is also NULL, a hardcoded default prompt will be used. Additionally, when pam_get_user() is called from a service module, the prompt may be
affected by module options as described below. The prompt is then expanded using openpam_subst(3) before it is passed to the conversation
function.
MODULE OPTIONS
When called by a service module, pam_get_user() will recognize the following module options:
user_prompt Prompt to use when asking for the user name. This option overrides both the prompt argument and the PAM_USER_PROMPT
item.
RETURN VALUES
The pam_get_user() function returns one of the following values:
[PAM_BUF_ERR] Memory buffer error.
[PAM_CONV_ERR] Conversation failure.
[PAM_SYSTEM_ERR] System error.
SEE ALSO
openpam_get_option(3), openpam_subst(3), pam(3), pam_conv(3), pam_get_authtok(3), pam_get_item(3), pam_set_item(3), pam_start(3),
pam_strerror(3)
STANDARDS
X/Open Single Sign-On Service (XSSO) - Pluggable Authentication Modules, June 1997.
AUTHORS
The pam_get_user() function and this manual page were developed for the FreeBSD Project by ThinkSec AS and Network Associates Laboratories,
the Security Research Division of Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 (``CBOSS''), as part of the DARPA
CHATS research program.
The OpenPAM library is maintained by Dag-Erling Smorgrav <des@des.no>.
BSD
September 12, 2014 BSD